It is possible to set a flag in the struct mipi_dsi_device so the panel is handled in low power (LP) mode. Some displays only support this mode and it is also good for testing.
Cc: Stephan Gerhold stephan@gerhold.net Signed-off-by: Linus Walleij linus.walleij@linaro.org --- drivers/gpu/drm/mcde/mcde_dsi.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/mcde/mcde_dsi.c b/drivers/gpu/drm/mcde/mcde_dsi.c index 889c39efa80c..d4a12fe7ff01 100644 --- a/drivers/gpu/drm/mcde/mcde_dsi.c +++ b/drivers/gpu/drm/mcde/mcde_dsi.c @@ -648,10 +648,11 @@ static void mcde_dsi_start(struct mcde_dsi *d) /* Command mode, clear IF1 ID */ val = readl(d->regs + DSI_CMD_MODE_CTL); /* - * If we enable low-power mode here, with - * val |= DSI_CMD_MODE_CTL_IF1_LP_EN + * If we enable low-power mode here, * then display updates become really slow. */ + if (d->mdsi->mode_flags & MIPI_DSI_MODE_LPM) + val |= DSI_CMD_MODE_CTL_IF1_LP_EN; val &= ~DSI_CMD_MODE_CTL_IF1_ID_MASK; writel(val, d->regs + DSI_CMD_MODE_CTL);
@@ -740,10 +741,11 @@ static void mcde_dsi_bridge_pre_enable(struct drm_bridge *bridge) /* Command mode, clear IF1 ID */ val = readl(d->regs + DSI_CMD_MODE_CTL); /* - * If we enable low-power mode here with - * val |= DSI_CMD_MODE_CTL_IF1_LP_EN + * If we enable low-power mode here * the display updates become really slow. */ + if (d->mdsi->mode_flags & MIPI_DSI_MODE_LPM) + val |= DSI_CMD_MODE_CTL_IF1_LP_EN; val &= ~DSI_CMD_MODE_CTL_IF1_ID_MASK; writel(val, d->regs + DSI_CMD_MODE_CTL); }